can some one suggest any alternative way for drill down on the same column, I am not looking for Hierarchies option as it divided into new columns,I wanted to see a "+" symbol or any relative sign and when expanded next column has to appear please suggest

If the data to expand in the same column is not contained in different fields then it will expand into a new column. If the data is all in a single column then the data will not expand but instead the column will contain every value the view has defined. Could you elaborate more on this requirement and why it exists for this project. Usually sharinga bit more understanding about the use case for a dashboard can provide our community members many alternative ways to set Tableau up to provide functionality that meets the user interactivity needs.